denoland-deno/cli/tests/testdata/classic_workers_event_loop.js

new Worker(
  "data:application/javascript,setTimeout(() => {console.log('done'); self.close()}, 1000)",
  { type: "classic" },
);
fix(runtime): event loop panics in classic workers (#11756) Classic worker scripts are now executed in the context of a Tokio runtime. This does mean we can not spawn more tokio runtimes in "op_worker_sync_fetch". We instead spawn a new thread there, that can create a new Tokio runtime that we can use to block the worker thread. 2021-08-18 09:19:22 -04:00			`new Worker(`
			`"data:application/javascript,setTimeout(() => {console.log('done'); self.close()}, 1000)",`
			`{ type: "classic" },`
			`);`